# Ep 180: Tiny CRTs, Springy PCBs, and Measuring Trees

- Show: [Hackaday Podcast](https://hardwarepodcasts.com/podcast/hackaday-podcast)
- Published: 2022-08-05
- Length: 48m
- Episode: 180
- Page: https://hardwarepodcasts.com/podcast/hackaday-podcast/2022-08-05-ep-180-tiny-crts-springy-pcbs-and-measuring-trees
- Listen: https://hackaday.libsyn.com/ep-180-tiny-crts-springy-pcbs-and-measuring-trees

## Summary

Hackaday editors Elliot Williams and Kristina Panos review a week of hardware hacks, highlighting Thomas Sandlander’s use of Arachne slicer software to enable 0.6mm nozzles for faster 3D printing, and Gili Yankovic’s highly customizable macropad where every keyswitch has its own ATtiny85 microcontroller. They also discuss John Opsal’s dendrometer project using a tire tread gauge to monitor tree health, and Pung Jerfoy’s modular keyboard featuring e-ink displays and haptic feedback. The episode covers various other projects including tiny CRTs from video conferencing systems, a USB drive with security through obscurity, and Carl Buggeha’s jumping flexible PCBs.

## Chapters

- [0:01](https://hardwarepodcasts.com/podcast/hackaday-podcast/2022-08-05-ep-180-tiny-crts-springy-pcbs-and-measuring-trees#t=1) Introduction: Winamp, Linux, and Sputnik sounds
- [6:24](https://hardwarepodcasts.com/podcast/hackaday-podcast/2022-08-05-ep-180-tiny-crts-springy-pcbs-and-measuring-trees#t=384) 3D Printing: Arachne slicer and large nozzles
- [12:32](https://hardwarepodcasts.com/podcast/hackaday-podcast/2022-08-05-ep-180-tiny-crts-springy-pcbs-and-measuring-trees#t=752) Gili Yankovic's ATtiny85 Macropad
- [14:38](https://hardwarepodcasts.com/podcast/hackaday-podcast/2022-08-05-ep-180-tiny-crts-springy-pcbs-and-measuring-trees#t=878) John Opsal's Dendrometer and Tree Health
- [18:06](https://hardwarepodcasts.com/podcast/hackaday-podcast/2022-08-05-ep-180-tiny-crts-springy-pcbs-and-measuring-trees#t=1086) Pung Jerfoy's Modular Keyboard with E-ink
- [20:01](https://hardwarepodcasts.com/podcast/hackaday-podcast/2022-08-05-ep-180-tiny-crts-springy-pcbs-and-measuring-trees#t=1201) Ruth Amos's Table Saw Safety and Tiny CRTs
- [29:31](https://hardwarepodcasts.com/podcast/hackaday-podcast/2022-08-05-ep-180-tiny-crts-springy-pcbs-and-measuring-trees#t=1771) Quick Hacks: Projector Lenses, Hoverboard Sofa, and USB Security
- [32:32](https://hardwarepodcasts.com/podcast/hackaday-podcast/2022-08-05-ep-180-tiny-crts-springy-pcbs-and-measuring-trees#t=1952) Retrograde Clocks, 7-Segment Displays, and Jumping PCBs
- [36:04](https://hardwarepodcasts.com/podcast/hackaday-podcast/2022-08-05-ep-180-tiny-crts-springy-pcbs-and-measuring-trees#t=2164) Camp Miss Articles: First Electronics Wins and Dehydration

## Topics

- [Prototyping & iteration](https://hardwarepodcasts.com/topic/prototyping)
- [Embedded firmware](https://hardwarepodcasts.com/topic/embedded-firmware)
- [Mechanical engineering](https://hardwarepodcasts.com/topic/mechanical-engineering)
- [PCB design & layout](https://hardwarepodcasts.com/topic/pcb-design)
- [Materials & manufacturing processes](https://hardwarepodcasts.com/topic/materials-and-processes)
- [Careers & education](https://hardwarepodcasts.com/topic/engineering-careers-and-education)

## Most relevant to

makers and hobbyists

## Mentioned

- Winamp (product)
- Arachne (tool)
- Ultimaker (company)
- Prusa Slicer (tool)
- ATtiny85 (chip)
- Arduino (product)
- ESP32 (chip)
- SawStop (product)
- Tiny Arcade (product)
- Namco (company)
- Sony Watchman (product)
- DIY Perks (other)
- Bitlooney (other)
- Hoverboard (product)
- eFoo (other)
- Retrograde Clock (product)
- Carl Buggeha (other)
- Dan Maloney (other)
- Jenny List (other)

## Related episodes from other shows

- [3D Printed Shark Jumps - Edifying Edison's Energy](https://hardwarepodcasts.com/podcast/the-amp-hour/2014-09-24-3d-printed-shark-jumps-edifying-edisons-energy) (The Amp Hour)
- [ML on Arduino, Framework's Open Hardware, Miniature Billiards Game, and More!](https://hardwarepodcasts.com/podcast/the-electromaker-show/2022-04-29-ml-on-arduino-frameworks-open-hardware-miniature-billiards-game-and-more) (The Electromaker Show)
- [MNT Pocket Reform, Apple E-Ink display, Pi Pico Midi Step Sequencer, and more!](https://hardwarepodcasts.com/podcast/the-electromaker-show/2022-09-28-mnt-pocket-reform-apple-e-ink-display-pi-pico-midi-step-sequencer-and-more) (The Electromaker Show)
- [Raspberry Pi Pico DAQ, Pine64 Audio Board, Vintage Computer Fest, and More!](https://hardwarepodcasts.com/podcast/the-electromaker-show/2022-04-21-raspberry-pi-pico-daq-pine64-audio-board-vintage-computer-fest-and-more) (The Electromaker Show)
- [Episode 241: Sketching with a Bandsaw](https://hardwarepodcasts.com/podcast/making-it/2019-12-13-episode-241-sketching-with-a-bandsaw) (Making It)

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